“Had to purchase a subscription to check whether a feature was available for my car. It was not. I canceled the subscription instantly and asked for a refund which was declined by the developer. That is a really unfortunate behavior in my…”
Independent automated assessment · 3 signal sources · 410 reviews scanned · analyzed 2026-10-04.
Carista OBD2 Car Scanner
Prizmos Ltd.Carista App is a mobile DIY car mechanic in the palm of your hands - code fea…
4.0 ★20,695 ratings
1M+Downloads
4+Age rating
—App size
Free · In-app purchasesIn-app purchases
About this app
Carista App is a mobile DIY car mechanic in the palm of your hands - code features, diagnose warning lights, monitor live data, and service your car. Save time and money from visits to the workshop with Carista. Customize your car's behavior, unlock hidden features, diagnose dashboard warning lights, monitor real-time parameters, and perform simple DIY procedures quickly and easily.…
Preview
Real screenshots from the store listing.
Independent evidence report
Evidence and review signals
This is where the page changes from an app-store listing into an evidence report: findings, important reviews, pricing and a dated history.
Which version this describes
When we ran this analysis, and what the store lists now.
This analysis describes version 10.0 of the app, analyzed 2026-10-04 . The app may have changed since.
The store currently lists version 10.0, updated 2026-08-21.
What we measured
Each line is a measurement published as a measurement, never a verdict.
Each line is a measurement, published as a measurement. Where we have not looked, the line says so rather than reading as a zero.
Developer replies to reviews
Replies to at least 1 review in 20
Price in the store description
States a price and a billing period
Cancelling, in the store description
Does not say how to cancel
Themes reported by reviewers
2 themes reported
Counted from the reviews we have read for this app. "No theme reported" means no theme reached our reporting threshold — it is not a finding that nothing is wrong with this app, and we do not say it is.
Five-star share of ratings
65–79% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.
In the package we scanned
No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence about the app, not a finding about it.
Graded bands · predicate set 1.4 · how these are measured
What the analysis found
App-specific findings, grouped by what each one rests on. How they are graded lives on its own page.
Positive evidence 1
Things this app does right, published at the same strengths as the catch list.
Developer says data deletion can be requested
The developer's data-safety disclosure on the store states that users can request deletion of their data, or the app's own text offers a way to delete the account. This restates what the developer declares; it is not a test of whether deletion works. Apple publishes no equivalent disclosure, so on an Apple-only listing only the app's own text can support it.
What we saw: The developer's store data-safety disclosure states that data deletion can be requested; we have not seen a deletion control in the app's own text
One source only — shown, not confirmed 2
A single kind of evidence. We publish these because withholding them would be the bigger distortion, and we do not treat any of them as a finding we stand behind.
Reported by users: Paywall blocks the basics
The core of the app — not extras — sits behind payment, or previously-free function moved behind a paywall.
What we saw: Paywall blocks the basics: raised by 5 distinct reviewers (1.2% of 410 reviews scanned)
Reported by users: Reports that the ads misrepresent the app
Reviewers repeatedly report that the app is not what its advertising showed. We never see the ad creative itself, so nothing we collect can corroborate or refute this — it is published as an attributed user report: what reviewers say, and how many of them said it.
What we saw: Misleading advertising: raised by 6 distinct reviewers (1.5% of 410 reviews scanned)
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“gets more expensive yet half the customise features still don't work. Now they have even locked more diagnostics behind the pay wall and upped the price by 50% with no new working benefits to justify it. The amount of times it has…”
“I bought the Carista OBD2 reader years ago, from day one it had all the features available, including checking faults. Now you need to pay a monthly fee just to be able to use the basic features of an OBD2? Thats ridiculous.”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version 10.0.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown0
Lowest—
Highest—
Google Play does not publish per-purchase prices.